Regarding the fire retardant mechanism of melamine cyanurate（MCA）there was a physical fire retardant method called "sublimation heat absorption" by Fujino Fumio in Japan, that is, the surface temperature of high polymer materials was reduced by sublimation heat absorption of MCA and the air was isolated to achieve the purpose of fire retardant, this view was once widely accepted. There are also views that MCA's fire retardant effect on nylon is because it can accelerate nylon melt droplets, thereby taking away heat and combustibles. However, melamine cyanurate used for fire retardant nylon, because of high fire retardant efficiency, the amount of increased, and the commercial and theoretical research field has been widely paid attention to, so the research on its fire retardant mechanism also received attention.

According to the results of research on the mechanism of melamine cyanurate fire retardant nylon by Italian G. Camino and the author (the former uses nylon 66/6 copolymer as the research object, and the latter uses nylon 6 as the research object), the fire retardant effect of MCA on nylon not only it is the physical effect of sublimation heat absorption and dripping, as well as catalytic carbonization and expansion in the condensed phase. China Meilaipo manufacturer and supply bromine fire retardant - melamine cyanurate.
The LOI and NOI of melamine cyanurate fire retardant nylon 66/6 copolymer (the limiting nitrous oxide index, that is, the combustion index of the material measured in N2O-N2 atmosphere), as shown in Table 4-15.